| 激光多普勒测速仪使用时圆柱管壁影响的分析计算 |
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| 引用本文： | 罗惕乾,杨诗通,吴锤结. 激光多普勒测速仪使用时圆柱管壁影响的分析计算[J]. 江苏大学学报(自然科学版), 1987, 0(3) |
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| 作者姓名： | 罗惕乾 杨诗通 吴锤结 |
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| 摘 要： | 本文分析计算了使用前向式激光多普勒测速仪测定圆管中流体介质速度时圆柱管壁的影响。由于圆柱管壁的影响,提高了发射光轴方向的空间分辨率,但引起发射系统和接收系统移动时不同步,降低信号质量和增加信号噪声。接收系统相对发射光轴的偏角应控制在15°之内。
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| 关 键 词： | 多普勒激光流速仪 管道流动 圆柱管壁影响 |
Analysis and Calculation of Circular Wall Effects with Laser Doppler Velocimeter |
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| Luo Tiqian Yang Shitong Wu Chuikai. Analysis and Calculation of Circular Wall Effects with Laser Doppler Velocimeter[J]. Journal of Jiangsu University:Natural Science Edition, 1987, 0(3) |
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| Authors: | Luo Tiqian Yang Shitong Wu Chuikai |
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| Affiliation: | Luo Tiqian Yang Shitong Wu Chuikai |
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| Abstract: | Laser Doppler velocimeter is used to measure the velocities of flowing fluid in circular pipe. Effect of pipe wall increases spacial resolving power in axial direction of laser beam emitter, while causes asynchronous movement of emitter and receiver, degrades signal quality and increase its noise. The offset angle of receiver against the emitter should be adjusted within 15 degrees. |
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| Keywords: | Doppler Laser velocimeter pipe flow circular pipe wall influence. |
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